Automatic scale.



E. W. WRAY. AUTOMATG SCALE. APPLIOATIGN FILED JULY 19, 1906.

910,627. Patented Jan. 26, 1909.

2 SHEETS-SHEET l.

E. w. wlmi. AUTOMATIC SCALE. APPLICATION FILED JULY I9, 1906.

91 0,627'. Patentd Jan. 26, 1909.

UNITED STATES PATENT OEEIOE.

EDDY W. WRAY, OE CHICAGO, ILLINOIS.

' AUToMATrC SCALE.

To all whomt't may concern:

in the county of Cook and State of Illinois,

'have invented Certain new and useful lmprovements in Automatic- Scales, oi which the following is a speciiication.

My invention relates toimprovements in scales, and particularly to that class oi scales known' as automatic scales, in which the capacity of the scale is increased-,by the addition of a constant Weight.

The object of the vinvention is to provide means `by which mistakes are prevented in the`.reading oi the iigures When the Weight is on or ofi". r

y In scales of this type, particularly in those autom'atic scales of the pendulum type, it has beencommon to employ an additional Weight to increase the capacity oi the'scale, and the use or non-use of the Weight requires the reading of a dierentsetof figures, and to avoid. mistakes theser are sometimes printedl in. diierent colors. Even with this, however, mistakes frequently occur, owing to the operator 'failing to note Whether the Weight is or is not in the proper position. By my ini vention,1 provide means by which when the Weight is removed from the Weighing transaction it is utilized to operate the indicating mechanism in such .manner that only the proper figures can be read.

In the accompanying drawings, Figure l is a. front elevation of a scale Oi the pendulum t pe to which my invention has been app led. Fig. 2 is a View of part of the indicating mechanism showing a modification. Fig. 3 a view similar to l, showing theindicating device in dii'lierent positions. F ig. 4 is a detail view of the indicating chart.

l Like parts are re resented by similar' letters oi reference in tie several views.

In the said drawings, a represents the pan or 1goods-receiver.

o is the main lever.

c is a Weighted pendulum Which is connected to the lever, preferably by means of a strap, d, operating over a cam e.- This cam, e, also carries an indicating-hand, j, which is ladapted to pass over the chart, g, a distance proportionate to thelweight on the receiver a. A scale of this character has a certain capacity depending upon the leverage and the Weight on the pendulum c. To increase the capacity a Weight is sometimes applied. In

'Specification of Letters` Patent. Application-med July 19, 1906.. Serial No. 326,928. l

, movab the present scale I have shown the weighing Patented. Jan. 26, 1909.

capacity of the scale Without the Weight as being ten pounds, theaddition of the Weight being adapted to double the capacity or make it twenty pounds. To provide for exposing only the proper indicatlon, depending on Whether the Weight is in use or not, I construct the indicating mechanism with a movable part adapted to be moved in such Way that only one series of indications will be visible at the same time. This is accomplished, as shown in Fig. 1, by means of a guard or shield, L, supported on a frame, h1, which is movable in suitable supports, h2, and attached to a lever, h3, which has a Weight-receiver h4. The removable Weight is shown on this Weight receiver at h5, a suitable Weight-receiver, h", being attached to the main lever, b, to act as a counteroise. Solong as the weight, h5, is on the Weig t-receiver, h4, the guard, it, will be elevated and kept over that series of gures from 10 to 20 which indicate the amounts determined vwhen the Weight is used as a counterpoise on the receiver, h6, leaving in vie'W only-the figures from l tol0. When the Weight isapplied to increase the ca ac ity of the scale, it sill be removed from t e shield-holding device and the shield will drop down and expose the upper series of figures and cover the lower series of figures, so that'it Will be im possible to read the Wrong series. It will be understood that the same Weight, h5, is used in both cases, and when the Weight is removed as a `counterpoise for the Weighing operation itis placed on the Weight receiver and operates to adjust the indicating mechanism to the proper position; When it is moved from the weight receiver and used as a counterpoise for the Weighing, the indicating mechanismis again automatically adjusted to the nei-1. condition.

in Fig. 2 I have shown the same result accom lished by having the figures on the 1le part instead of on the stationary part, this movable part, g1, is in the nature of a supplemental dial or chart havmga.. plzurality of series of figures adapted to be dlsplayed throughl an opening, h3, in the stationary dial which in this case performs the function oi the screen this arrangement being tionary and the chart with the plurahty of figures being movable. When the Weight,

h5, is used with the Weight receiver, it", it is, of course, constant and when the device is used as acomputing scale it requires the addition of a. constant amount to the amount' shoWn on the chart to eachl rice per pound in t is obvious the which case the computing chart Would be .shifted as in the regular Way so' that only suoli series of ures as would correspond with the one set o -price gures could be read; the

pendulum Weight when removed from the beingl adapted to operate the lndicating mechanismin .such Way that only one series of figures would shoviT as inthe first mentioned arrangement.

Having thusv described my invention, I'

claim:

1. In an automatic scale, a single indicating device including a dial With a plurality of series of figures thereon, one of said series bein normally concealed, .counterpoise Weig t, and a receiver therefor, a supplemental receiver for said' counterpoise, and means connected With said last-mentioned receiver for simultaneously displaying a different series of figures upon the removal of the Weight from said supplemental receiver, substantially as specied.

2.' In an automatic scale, an indicating ldevice formed With tWo parts one stationary andthe other movable, one of said parts hav a plurality ofsets of figures all but one of said' sets being hidden bythe other part, a removable Weight, a Weigh-t receiver for the same, an additional Weight receiver attached to the movable part of said indicating device and adapted by its Weight to hold sald movable part in a certain position andthus bring a certain set of' figures into view, as and for the purpose s ecified.

3. In a sca e having an indicating hand and a two-part indicating device, one of said parts having a plurality of sets of figures adapted to 'operate in connection with said hand, all but one of said setsof figures being hidden 'by the other3pa'rt, a counter-poise adapted to move distances corr ol'rding to the Weight on the scale, a molile Weight for changing the capacityof said scale, and a Weight receiver adapted to receive said weight when not in use as a counter-poise, and a connection from said Weight receiver to the movable part of said indicating device tobri'ng the movable portion of said indicating device into a different position and expose a different set of figures.

4. In combination with 'the mam lever, a goods receiver thereon, a endulum, and a connection from said main ever lto said pendulum, an indicating hand, a removable counter-poise Weight adapted .to change the capacity of said scale, and an indicating device having indicating figures thereon an'd Width, the movable part being adapted to be operated by said Weight to cover up certain of said indicating'gures anddisclose others depending on the position'of the Weight,'sub stantially Ias specified.

5. In an automatic counterpoise Weight receiver and a movable Weight normally thereon, a 'single indicating device including a dial 1with a lurality oi' series of iiigures thereon, a movable part c0- operating with said dial to expose one series .of figures at a time, an additional Weight receiver forming part 'of the scale', and-means connected with said vreceiver'and said mov- I able part for exposing a diiierent'seiies of I figures upon theremoval of the .counterpoise i from the first-mentioned Weight receiver to the second mentioned-Weight ieceiver, subi stantially as and for the urposesp'ecified.

In testimony whereof, have hereunto sot i my hand this 12th d ay of July A. D. 1906. i EDDY W. VVRAY.

| Vitnesses:

GEVAL GEORGE WHITE,

i CHAsEUGENE SHoMo.

including a movablepart coperating therependulum scale, a- 

